<template>
  <div>
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>数据统计</el-breadcrumb-item>
      <el-breadcrumb-item>数据报表</el-breadcrumb-item>
    </el-breadcrumb>
    <el-card>
      <div id="main" style="width: 750px;height:400px;"></div>
    </el-card>
  </div>
</template>
<script type="text/ecmascript-6">
import echarts from 'echarts'
import _ from 'lodash'
export default {
  name:'', 
  data() {
    return {
      //需要合并的数据
      options: {
          title: {
            text: '用户来源'
          },
          tooltip: {
            trigger: 'axis',
            axisPointer: {
              type: 'cross',
              label: {
                backgroundColor: '#E9EEF3'
              }
            }
          },
          grid: {
            left: '3%',
            right: '4%',
            bottom: '3%',
            containLabel: true
          },
          xAxis: [
            {
              boundaryGap: false
            }
          ],
          yAxis: [
            {
              type: 'value'
            }
          ]
        }
    }
},
  components:{},
  async mounted(){
    // 此时页面上的元素，已经被渲染完毕了，初始化echarts实例
    var myChart = echarts.init(document.getElementById('main'))
    const {data:res} = await this.$http.get("reports/type/1")
    if(res.meta.status!==200){
      return this.$message.error("获取折线图数据失败！")
    }
    //通过lodash函数库进行合并对象
    const result = _.merge(res.data,this.options)
    console.log(result)
    myChart.setOption(result)
  }
}
</script>
<style lang="scss" scoped>
</style>